The Most Recent Common Ancestor (MRCA) is an individual who donated DNA to every single living person, meaning we are all related to each other through him/her. Which statement best describes the human MRCA based on mitochondrial evidence? Group of answer choices A: A woman who lived in Siberia 40-50,000 years ago B: A woman who lived in Africa 200,000 to 300,000 years ago C: This person was the only human alive at some point D: The very first member of our species

The Most Recent Common Ancestor (MRCA) is an individual who donated DNA to every single living person, meaning we are all related to each other through him/her. Which statement best describes the human MRCA based on mitochondrial evidence? Group of answer choices A: A woman who lived in Siberia 40-50,000 years ago B: A woman who lived in Africa 200,000 to 300,000 years ago C: This person was the only human alive at some point D: The very first member of our species

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Description: 77: The Most Recent Common Ancestor (MRCA) is an individual who donated DNA to every single living person, meaning we are all related to each other through him/her. Which statement best describes the human MRCA based on mitochondrial evidence?Group o

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter16: Reproductive Technology, Genetic Testing, And Gene Therapy

Section: Chapter Questions

Problem 14QP: Is gene transfer a form of eugenics? Is it advantageous to use gene transfer to eliminate some...

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77: The Most Recent Common Ancestor (MRCA) is an individual who donated DNA to every single living person, meaning we are all related to each other through him/her. Which statement best describes the human MRCA based on mitochondrial evidence? A: A woman who lived in Africa 200,000 to 300,000 years ago B: This person was the only human alive at some point C: A woman who lived in Siberia 40-50,000 years ago
Example 3The Basque people, who have a distinct language, live on the coastal border of France and Spain. The 700,000 modern Basques had long been thought to descend from hunter-gatherers who lived in the area about 7,500 years ago, before the first farmers arrived. DNA told a different story. Researchers compared the genome sequences of bones from eight Basque farmers who had lived in a cave in northern Spain from 5,500 to 3,500 years ago to genomes from other skeletons representing severalEuropean hunter-gatherers and early farming groups, as well as to modern Europeans. While the ancient farmers had genomes representing many groups, including those of hunter-gatherers, the Basques indeed have a unique genome – but one that descends from the earliest farmers, not from hunter-gatherers. Apparently, their uniqueness today is due to their self-imposed isolation as the rest of Europe interbred. Source: Lewis, Ricki. Human Genetics Concepts and Applications (2018). Twelfth edition.…
You compare two strands of mtDNA and discover that there are 3 differences in base pairs between them. Assuming that the mutation rate for the species that you are examining is 1 mutation every 20,000 years, how long ago did the two strands share a common ancestor? Write your answer in xxx,xxx format. These two strands shared a common ancestor _____________ years ago.
101. As discussed in lecture, recent studies of Neanderthals' nuclear DNA indicates that Neanderthals had the "ginger gene" indicating they had red hair and freckles. Neanderthals share approximately 99.5% of modern human DNA. Neanderthals also had the FOXP2 gene associated with speech. modern people outside of Africa received ~3-5% of their genes from Neanderthals. All of the above
which event contradicts the central dogma of molecular biology?
What does the future hold for genomes? How will they be different in 100, 1,000, 1 million, or 1 billion years? Make this a long discussion.
Would the rate of deleterious or beneficial mutations be a good molecular clock? Why or why not?
Which result from the Miller and Urey experiment provides evidence that the molecules of life could have spontaneously been produced in the ancient Earth environment? a After their experiment, they produced DNA from amino acids. b They showed how DNA can be produced from simple molecules that included water, oxygen, carbohydrates, and lipids. c Their experiment produced amino acids—the building blocks of life—from chemicals that existed in the environment of ancient Earth. d Miller and Urey's experiment provided evidence that showed that although oxygen was lacking in the environment of ancient Earth, it could be readily made from the decomposition of rocks and minerals.
Which of the following does not support the idea of descent with modification? A. Organisms and the cells that they are composed of arise from DNA B. When organisms reproduce they generate new copies of DNA to pass down to their offspring C. We inherit traits from our ancestors because in possess molecules of their DNA that you received from your parents D. In the process of DNA replication, mutations occur with the goal of increasing an organism's fitness
In the book, Jurassic Park, by Michael Crichton, scientists are able to reconstruct dinosaurs by getting dinosaur DNA from a mosquito that had been well-preserved in amber since the era of dinosaurs. Do you believe this can actually happen in real life? Why?
The green sea slug carries the genes for synthesizing chlorophyll (apparently acquired from the chloroplasts of green algae), illustrating which type of genetic change leading to evolution? horizontal gene transfer gene deletion gene duplication mutation exon shuffling
Mitochondrial DNA evidence has shown that____. a. the greatest diversity of mtDNA is in European peoples, suggesting they share a more recent origin b. the least diversity of mtDNA is in African peoples, suggesting Old World peoples share a more ancient origin c. the greatest diversity of mtDNA is in African peoples, suggesting they share a more ancient origin d. the least diversity of mtDNA is in European peoples, suggesting they share a more ancient origin